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Dataprotector "Disable Medium header verification"

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Robin_39
Advisor

Dataprotector "Disable Medium header verification"

How can i disable the Medium header Verification of a Backupjob?
14 REPLIES
Leif Halvarsson_2
Honored Contributor
Solution

Re: Dataprotector "Disable Medium header verification"

Hi,

I have not found any way to disable Media header verification, there is no option in the global or .omnirc option files. What is the reason for disabling header verification ?
Uwe Zessin
Honored Contributor

Re: Dataprotector "Disable Medium header verification"

What is meant with 'Medium header Verification' - could this be a problem with to use of media protection?
.
Robin_39
Advisor

Re: Dataprotector "Disable Medium header verification"

The verification takes 19 hours. Thats to long for us. ;)
Leif Halvarsson_2
Honored Contributor

Re: Dataprotector "Disable Medium header verification"

Hi,
Something must be wrong. After backup the media is rewound and he media header (at the start of media) is verified). This verification will not take long time, max. 1 minute. In your case it seems as the entire media is verified (or even worse, a normal, full verification will not take 19 hours).

It is not possible to configure automatic (full media) verification in DP, is there perhaps a vedia verification started as a post_exec job ?

Is CRC-checksum (for the device) enabled ?
Kurt Beyers.
Honored Contributor

Re: Dataprotector "Disable Medium header verification"

Robin,

Your medium will be bad. A Medium Header Verification should take a minute or so to complete.

Run a 'verify' of your tape to see if any troubles are occuring. Is the status of the tape still 'good'?

If the problem occurs with any (or even a new) tape, there will be a hardware problem with the drive.

best regards,
Kurt
Robin_39
Advisor

Re: Dataprotector "Disable Medium header verification"

No the CRC-Option is disabled and it's no post_exec defined.

Medium header verification:
---------------------------------------
[Normal] From: VBDA@file.Domain.ch "C:" Time: 07.02.2004 23:07:32
COMPLETED Disk Agent for file.Domain.ch:/C "C:".

[Normal] From: BMA@file.Domain.ch "Drive" Time: 08.02.2004 18:07:36
scsi3:0:5:0C
Medium header verification completed, 0 errors found
---------------------------------------
Robin_39
Advisor

Re: Dataprotector "Disable Medium header verification"

Not in all Backupjobs the Medium header verification takes so long. It's only one Job. In the other Jobs takes only 1,5 minutes.

The verification takes 19h every week at the full backup with three different Tapes.
Drazen Hegedusic
Frequent Advisor

Re: Dataprotector "Disable Medium header verification"

Hi!

Try "cleaning" your omniback database...
Example: omnidbcheck -extended

Drazen
Robin_39
Advisor

Re: Dataprotector "Disable Medium header verification"

I run this command and the output shows that all ok.

I'm not sure if it my problem now repair.

The backupjob run tomorrow and then i see it.

Output of the command:
C:\Programme\OmniBack\bin>omnidbcheck -extended
Check Level Mode Status
==================================================
Core -core OK
Filenames -filenames OK
DCBF(presence and size) -bf OK
SIBF(readability) -sibf OK
OMNIDC(consistency) -dc OK
DONE!

Gruss aus der Schweiz :)
Robin_39
Advisor

Re: Dataprotector "Disable Medium header verification"


The "header medium verification" takes still 19h :(

Have anybody a other solution?
Kurt Beyers.
Honored Contributor

Re: Dataprotector "Disable Medium header verification"

Robin,

Run the backup specification with new tapes and see if it still takes that much time for the medium header verification.

best regards,

Kurt
Robin_39
Advisor

Re: Dataprotector "Disable Medium header verification"

Only one Backupjob takes so long. The rest (4 other Backupjobs) are normal (takes only 1 min.).

The Backuptapes are only 1 year old and i have 3 x 7 Backuptapes. I don't think the Backuptapes are damaged.
Kurt Beyers.
Honored Contributor

Re: Dataprotector "Disable Medium header verification"

Robin,

You can disable the Medium Header Verification.

The medium header sanity check is enabled by default. The global variable can be set by uncommenting the following line in the Global
Options file: Ob2HeaderCheck=1.

So you've got a workaround for the long time of the verification, but I would run the same job with a new tape. Then you are sure that it is not due to a bad tape.

And install the latest MA patch as well. As a standard action.

best regards,

Kurt
Kurt Beyers.
Honored Contributor

Re: Dataprotector "Disable Medium header verification"

It should of course be

Ob2HeaderCheck=0

Kurt